即使我分配逻辑以获取其值后，PHP中的未定义变量

Question

我有一个简单的逻辑可以对标签进行排序并为其分配标签

但有时显示Undefined variable：predikat_cluster2错误

您能指出我的错误吗？我很抱歉要问这样的琐碎事情，但是我对此很新

谢谢。

    $rata_rata1 = '';
    $rata_rata2 = '';
    $rata_rata3 = '';
    $predikat_cluster1 ='';
    $predikat_cluster2 ='';
    $predikat_cluster3 ='';

            foreach($centroidcluster->result() as $h)
            {    

    $rata_rata1 = $h->centroid1cluster1_baru;


    $rata_rata2 = $h->centroid1cluster2_baru; 

    $rata_rata3 = $h->centroid1cluster3_baru;

  }
    ////PREDIKAT CENTROID 1

    if($rata_rata1 > $rata_rata2&& $rata_rata1 > $rata_rata3){
      $predikat_cluster1 = "Sangat Baik";
    }
    elseif($rata_rata1> $rata_rata2&& $rata_rata1 < $rata_rata3)
    {
      $predikat_cluster1 = "Baik";
    }
     elseif($rata_rata1 < $rata_rata2&& $rata_rata1 < $rata_rata3)
    {
      $predikat_cluster1 = "Cukup Baik";
    }


    if($rata_rata2 > $rata_rata3&& $rata_rata2 > $rata_rata1){
      $predikat_cluster2 = "Sangat Baik";
    }
    elseif($rata_rata2> $rata_rata3&& $rata_rata2 < $rata_rata1)
    {
      $predikat_cluster2 = "Baik";
    }
     elseif($rata_rata2 < $rata_rata3&& $rata_rata2 < $rata_rata1)
    {
      $predikat_cluster2 = "Cukup Baik";
    }

    if($rata_rata3 > $rata_rata2&& $rata_rata3 > $rata_rata1){
      $predikat_cluster3 = "Sangat Baik";
    }
    elseif($rata_rata3 > $rata_rata2&& $rata_rata3 < $rata_rata1)
    {
      $predikat_cluster3 = "Baik";
    }
    elseif($rata_rata3 < $rata_rata2&& $rata_rata3 < $rata_rata1)
    {
      $predikat_cluster3 = "Cukup Baik";
    }

    ?>